Publicit is the European self-service platform for omnichannel advertising: one dashboard that puts a campaign on connected TV, billboards, digital screens in the street, metro stations, mobile apps and press. Underneath that simple dashboard sits the hard part, our own hybrid ad exchange. Every time an ad slot opens anywhere in our network, a TV in a living room or a screen in a metro corridor, an auction has to run and finish before anyone notices it happened. Not "fast for a web app" milliseconds; the kind where garbage collection pauses are a bug, and where a query to a database you didn't need to make is the difference between winning and losing.
Most of the industry solved this by stacking more cloud servers on the problem and accepting the latency. We took the opposite bet: rebuild the decision path from the ground up, in Rust, with hardware acceleration and GPU-based decisioning, so we can afford to actually think about each auction. Is this placement safe for this brand? What is it genuinely worth? All of it in the time most exchanges spend on network overhead alone.




We're a small engineering team in Barcelona building real infrastructure in a market where most players stopped building years ago. This role sits across both halves of the company: the exchange that runs the auctions, and the platform our customers actually touch. An advertiser sets a budget in a form. Somewhere downstream that becomes pacing logic in a system with a millisecond budget, and when the two disagree, somebody has to hold the whole picture in their head to see why. What we're looking for is someone to take a piece of it and own it end to end: how it's shaped, how it's built, who builds it with you, and the number that says whether it worked.
You'll set how we build here, and over time, who builds it.
Campaigns, budgets, targeting and reporting all have to mean the same thing on both sides of that line. Break the work down, sequence it, keep it moving, and unblock the people around

📌 Constructeur/ Engineer (Bellprat)
🏢 Publicit Global
📍 Bellprat